package com.xyhy.core.utils.spring;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import com.xyhy.core.base.service.IUserContextService;

import java.util.Optional;

public class SpringContextUtil implements ApplicationContextAware {
  public static ApplicationContext applicationContext;

  @Override
  public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
    SpringContextUtil.applicationContext = applicationContext;
  }

  public static Object getBean(String name) {
    return applicationContext.getBean(name);
  }

  public static <T> T getBean(Class<T> requiredType) {
    try {
      return applicationContext.getBean(requiredType);
    } catch (NoSuchBeanDefinitionException e) {
      return null;
    }
  }

  public static <T> T getBean(String name, Class<T> requiredType) {
    try {
      return applicationContext.getBean(name, requiredType);
    } catch (NoSuchBeanDefinitionException e) {
      return null;
    }
  }

  public static boolean containsBean(String name) {
    return applicationContext.containsBean(name);
  }

  public static boolean isSingleton(String name) {
    return applicationContext.isSingleton(name);
  }

  public static Class<? extends Object> getType(String name) {
    return applicationContext.getType(name);
  }

  public static Long getUserId() {
    return Optional.ofNullable(applicationContext.getBean(IUserContextService.class)).map(x -> x.getUserId()).orElse(null);
  }

}